Monolithic devices formed with an array of light emitting diodes and a detector
US4588883A · kind A · utility
40Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1983 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Nov 18, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H29/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An array of light emitting diodes are fabricated in the substrate of a monolithic device. Each diode, when forward biased, produces output light which is emitted from the device and subsurface light which is transmitted through the substrate. A single detector is fabricated in the substrate and detects subsurface light from any forward biased light emitting diode of such array. In response to such subsurface light, the detector produces a signal which is representative of the intensity of output light emitted from the device by such forward biased light emitting diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.